Compact palm-sized grip (4.3 × 1.7 × 0.9in) and lightweight (2.9oz). * 7 SuperSpeed ports delivering transfer speed of up to 5Gbps (Note: actual rate will depend on the capability of your device). Backward compatible with USB 2.0 / 1.1. * The 7th port features BC 1.2 charging, offering quick charges of up to 1.5A (refer to product description for details) to your USB-enabled devices. * High-grade chipset and 36W adapter guarantee steady operation. Supports plug-and-play and hot-swapping. No installation of drivers required for Windows XP / Vista / 7 / 8 or Mac OS X 10.2 and above. * Package contents: Anker USB 3.0 7-Port Hub, 12V 3A power adapter, 2.7-foot USB 3.0 cable, instruction manual.